What are the stats you recommend for each positions? I obviously don't spend any points on scrum or lineout for my backs, or on kick accuracy/force for forwards but am rather clueless about other stats.

And some other questions, like do you need lineout stats for forwards other than your main jumper? How does Strength help other than to injure your opponents? And how much does Defense/Attack acceleration help etc.

Read the help section in the game, it will give you a better idea of what each stat does, to explain it on the forum is going to be a painful excercise.

Regarding what to stats to train per player depends on what type of game you want to play. If you want to play a passing game train your passing stats, if you want to try and runover your opponent train penetration force, if you want solid defence focus on tackling and safe tackling or mix it up.and train one guy to be good in one thing and another good in something else.

Decide on what type of game you want to play and train your players according to that.

And the best way to see the effect of each stat in your strategy is to play friendlies with your guild mates, lots and lots of friendlies

Thanks for the reply. I did read the descriptions but was kind of unsure as some stats don't really seem to do what they're supposed to. Like kick accuracy/force. My 10 can't even get the ball to the touch and he misses just as many penalties as he did when I started playing. Right now I'm trying out low value for Forward - threequarters because when my players try to force passes to the backs they always get intercepted. Also shallow Attack Depth as I'm losing too much ground when passing back.

You'll have to play around with team and individual strategies (individual strategies often get overlooked). Changing one thing on either of your strats could influence something else, example of thatvis high rhytm will give your player plenty of pace to run around opponents but could lead to inaccurate kicking.

The rest is up to you to figure out with plenty of testing.

The problem is you won't get an answer here for that. That's one of those that you work out with your guild mates as its one of the main parts of the game and will give you an advantage over most people. Several stats work in conjunction with other stats, and those of your opponent, while also affecting what your optimum settings are in team and individual strategies. That stuff is what I spend a lot of time on in my guild helping others tweak and focus their energy on. Given the sheer amount of time and effort it takes to learn and perfect, and also how much time is spent helping people in your own guild get their stats and setting right, it's HIGHLY unlikely anyone will post the answers on the forums. That's the endgame that we all strive to understand and spend hours on end perfecting, you don't just give that out to the random public who haven't put the time in to work it out I'm afraid

I don't know why I can't work it out, but how do I swap players I've bought for players in my lineout, I don't know where or how I'm supposed to do it

Open your strategy building, tap/click on the player you bought and drag him over the player you want to replace. You do the same if you want to sub during a match as well.